x=int(input())
if x<=599:
  print(8)
elif x<=799:
  print(7)
elif x<=999:
  print(6)
elif x<=1199:
  print(5)
elif x<=1399:
  print(4)
elif x<=1599:
  print(3)
elif x<=1799:
  print(2)
else:
  print(1) x=int(input()) x int(input()) int input() input if x<=599:
  print(8)
elif x<=799:
  print(7)
elif x<=999:
  print(6)
elif x<=1199:
  print(5)
elif x<=1399:
  print(4)
elif x<=1599:
  print(3)
elif x<=1799:
  print(2)
else:
  print(1) x<=599 x 599 print(8) print 8 elif x<=799:
  print(7) x<=799 x 799 print(7) print 7 elif x<=999:
  print(6) x<=999 x 999 print(6) print 6 elif x<=1199:
  print(5) x<=1199 x 1199 print(5) print 5 elif x<=1399:
  print(4) x<=1399 x 1399 print(4) print 4 elif x<=1599:
  print(3) x<=1599 x 1599 print(3) print 3 elif x<=1799:
  print(2) x<=1799 x 1799 print(2) print 2 print(1) print 1 x=int(input()) int(input()) x
x=int(input())
if x<=599:
  print(8)
elif x<=799:
  print(7)
elif x<=999:
  print(6)
elif x<=1199:
  print(5)
elif x<=1399:
  print(4)
elif x<=1599:
  print(3)
elif x<=1799:
  print(2)
else:
  print(1)